Recognised as Colour

#FF1F16

#FF1F16
Red
Dark
Nearest: Red

#FF1F16 is a red with RGB values 255, 31, 22 and HSL 2°, 100%, 54%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF1F16#FF1F16

HEX#FF1F16

RGBrgb(255, 31, 22)

RGB (0–1)1, 0.1216, 0.0863

RGB percentages100%, 12.2%, 8.6%

HSLhsl(2.3, 100%, 54.3%)

HSV / HSBhsv(2.3, 91.4%, 100%)

CMYK0%, 87.8%, 91.4%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,719,638

CSS custom property--colour: #FF1F16;

Brightness & contrast

Relative luminance0.22298WCAG 2.x, 0 is black and 1 is white

Perceived brightness141.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.46:1

Contrast with white3.85:1WCAG normal text: Fail

Contrast with black5.46:1WCAG normal text: AA

Greyscale equivalent#4E4E4E

Inverted#00E0E9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#71630Dno red cones; affects about 1% of men; ΔE 83.4 from the original

Deuteranopia#A59300no green cones; the most common form, about 1% of men; ΔE 83.6 from the original

Tritanopia#FF0023no blue cones; rare, and affects men and women equally; ΔE 6.9 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text3.85:1WCAG large text: AA

Contrast with black, large text5.46:1WCAG large text: AAA

Named colours

Red · ΔE 6.2 Orange red · ΔE 12.3 Tomato · ΔE 26 Crimson · ΔE 29.9 Firebrick · ΔE 35.7 Coral · ΔE 37.3

Nearest named CSS colourRed (#FF0000)ΔE 6.17, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#16F6FF

Analogous#FF1681, #FF9316

Triadic#16FF1F, #1F16FF

Split complementary#16FF94, #1681FF

Tetradic#82FF16, #16F6FF, #9416FF

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFE3E2

Lighter +30%#FFB2AF

Lighter +20%#FF817C

Lighter +10%#FF5049

Darker −10%#E20900

Darker −20%#AF0700

Darker −30%#7C0500

Darker −40%#490300

More saturated +25%#FF1F16

Less saturated −25%#E23A33

Channel breakdown

R255

G31

B22

Red255 (100%)

Green31 (12.2%)

Blue22 (8.6%)

Hue2.32°

Saturation (HSL)100%

Lightness54.31%

Dominant channelRed

Hex per channelR FF · G 1F · B 16

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF1F16 (chemical formula)

Formula
341.964 g/mol
18 atoms

FF1F16 has a molar mass of 341.964 g/mol, made up of 18 atoms across 1 element: 18 × F.

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Molar mass

Molar mass341.964 g/mol

Total atoms per molecule18

Distinct elements1

Mass of one molecule5.6784458 × 10^-22 g

Molecules per gram1.7610452 × 10^21

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

F100%

Fluorine (F × 18)341.964 g/mol, 100%

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Elements in this formula

Fluorine

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